Q: kernel panic

My wife's Macbook Pro keeps restarting due to a kernel panic. Here is the text from the panic report. Any information that you could provide about what is causing the panic would be greatly appreciated.

Thu Jul  9 11:01:54 2015

*** Panic Report ***

panic(cpu 4 caller 0xffffff8004017cc2): Kernel trap at 0xffffff8003d0e241, type 14=page fault, registers:

CR0: 0x0000000080010033, CR2: 0xffffff8190bbb354, CR3: 0x000000000e89d0b5, CR4: 0x00000000001626e0

RAX: 0x0000000000300075, RBX: 0xffffff806dcb6400, RCX: 0xffffff806dcb6408, RDX: 0x0001000300010000

RSP: 0xffffff809cc435d0, RBP: 0xffffff809cc43640, RSI: 0xffffff806dcb6000, RDI: 0xffffff818ffbb180

R8:  0xffffff8190bbb354, R9:  0xffffff81916bb24c, R10: 0xffffff818ffbb28c, R11: 0x0f0f0f0f0f0f0f0f

R12: 0xfffffe9fcdf2a000, R13: 0xffffff806dcb6000, R14: 0xffffff801ed367f0, R15: 0x000000000c0011eb

RFL: 0x0000000000010202, RIP: 0xffffff8003d0e241, CS:  0x0000000000000008, SS:  0x0000000000000010

Fault CR2: 0xffffff8190bbb354, Error code: 0x0000000000000000, Fault CPU: 0x4

Backtrace (CPU 4), Frame : Return Address

0xffffff809cc43280 : 0xffffff8003f2bda1

0xffffff809cc43300 : 0xffffff8004017cc2

0xffffff809cc434c0 : 0xffffff8004034b73

0xffffff809cc434e0 : 0xffffff8003d0e241

0xffffff809cc43640 : 0xffffff8003f8f4e1

0xffffff809cc436b0 : 0xffffff8003f8dff5

0xffffff809cc436e0 : 0xffffff8003f90591

0xffffff809cc43720 : 0xffffff8003f996ff

0xffffff809cc43930 : 0xffffff8004017878

0xffffff809cc43af0 : 0xffffff8004034b73

0xffffff809cc43b10 : 0xffffff8004011189

0xffffff809cc43c70 : 0xffffff80043daf29

0xffffff809cc43cb0 : 0xffffff80044170ed

0xffffff809cc43dc0 : 0xffffff800442777b

0xffffff809cc43e80 : 0xffffff8004424b69

0xffffff809cc43f50 : 0xffffff800444bc56

0xffffff809cc43fb0 : 0xffffff8004035376

BSD process name corresponding to current thread: Google Chrome He

Mac OS version:

14E46

Kernel version:

Darwin Kernel Version 14.4.0: Thu May 28 11:35:04 PDT 2015; root:xnu-2782.30.5~1/RELEASE_X86_64

Kernel UUID: E3C26B2F-8B97-3F1D-B193-690F7E34F830

Kernel slide:     0x0000000003c00000

Kernel text base: 0xffffff8003e00000

__HIB  text base: 0xffffff8003d00000

System model name: MacBookPro9,1 (Mac-4B7AC7E43945597E)

System uptime in nanoseconds: 66516300015443

last loaded kext at 51795325404063: com.apple.driver.AppleUSBTCKeyEventDriver 240.2 (addr 0xffffff7f85871000, size 12288)

last unloaded kext at 51904397091328: com.apple.driver.AppleUSBCDC 4.3.3b1 (addr 0xffffff7f8586d000, size 16384)

loaded kexts:

com.apple.driver.AppleHWSensor 1.9.5d0

com.apple.driver.AudioAUUC 1.70

com.apple.iokit.IOUserEthernet 1.0.1

com.apple.iokit.IOBluetoothSerialManager 4.3.5f8

com.apple.driver.AGPM 110.19.6

com.apple.driver.X86PlatformShim 1.0.0

com.apple.Dont_Steal_Mac_OS_X 7.0.0

com.apple.driver.AppleUpstreamUserClient 3.6.1

com.apple.driver.AppleMikeyHIDDriver 124

com.apple.driver.AppleHWAccess 1

com.apple.GeForce 10.0.4

com.apple.driver.AppleIntelHD4000Graphics 10.0.6

com.apple.driver.AppleHDA 272.18.1

com.apple.driver.AppleOSXWatchdog 1

com.apple.driver.AppleMikeyDriver 272.18.1

com.apple.driver.AppleHV 1

com.apple.driver.AppleThunderboltIP 2.0.2

com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport 4.3.5f8

com.apple.iokit.AppleBCM5701Ethernet 10.1.3

com.apple.driver.AppleSMCPDRC 1.0.0

com.apple.driver.AirPort.Brcm4360 930.37.3

com.apple.driver.AppleSMCLMU 2.0.7d0

com.apple.driver.AppleMuxControl 3.10.24

com.apple.driver.AppleLPC 1.7.3

com.apple.driver.AppleIntelSlowAdaptiveClocking 4.0.0

com.apple.driver.AppleIntelFramebufferCapri 10.0.6

com.apple.driver.AppleMCCSControl 1.2.12

com.apple.driver.SMCMotionSensor 3.0.4d1

com.apple.filesystems.autofs 3.0

com.apple.driver.AppleUSBTCButtons 240.2

com.apple.driver.AppleUSBTCKeyboard 240.2

com.apple.driver.AppleIRController 327.5

com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1

com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0

com.apple.BootCache 36

com.apple.driver.AppleUSBHub 705.4.2

com.apple.iokit.SCSITaskUserClient 3.7.5

com.apple.driver.XsanFilter 404

com.apple.iokit.IOAHCIBlockStorage 2.7.1

com.apple.driver.AppleSDXC 1.6.5

com.apple.driver.AppleFWOHCI 5.5.2

com.apple.driver.AppleAHCIPort 3.1.2

com.apple.driver.AppleUSBEHCI 705.4.14

com.apple.driver.AppleUSBXHCI 710.4.11

com.apple.driver.AppleACPIButtons 3.1

com.apple.driver.AppleSmartBatteryManager 161.0.0

com.apple.driver.AppleRTC 2.0

com.apple.driver.AppleHPET 1.8

com.apple.driver.AppleSMBIOS 2.1

com.apple.driver.AppleACPIEC 3.1

com.apple.driver.AppleAPIC 1.7

com.apple.driver.AppleIntelCPUPowerManagementClient 218.0.0

com.apple.nke.applicationfirewall 161

com.apple.security.quarantine 3

com.apple.security.TMSafetyNet 8

com.apple.driver.AppleIntelCPUPowerManagement 218.0.0

com.apple.iokit.IOSerialFamily 11

com.apple.nvidia.driver.NVDAGK100Hal 10.0.4

com.apple.nvidia.driver.NVDAResman 10.0.4

com.apple.iokit.IOSurface 97.4

com.apple.driver.DspFuncLib 272.18.1

com.apple.kext.OSvKernDSPLib 1.15

com.apple.iokit.IOBluetoothHostControllerUSBTransport 4.3.5f8

com.apple.iokit.IOBluetoothFamily 4.3.5f8

com.apple.iokit.IOEthernetAVBController 1.0.3b3

com.apple.driver.AppleHDAController 272.18.1

com.apple.iokit.IOHDAFamily 272.18.1

com.apple.iokit.IOAudioFamily 203.3

com.apple.vecLib.kext 1.2.0

com.apple.iokit.IO80211Family 730.60

com.apple.driver.mDNSOffloadUserClient 1.0.1b8

com.apple.iokit.IOFireWireIP 2.2.6

com.apple.iokit.IONetworkingFamily 3.2

com.apple.driver.AppleBacklightExpert 1.1.0

com.apple.iokit.IONDRVSupport 2.4.1

com.apple.driver.AppleGraphicsControl 3.10.24

com.apple.driver.AppleSMBusPCI 1.0.12d1

com.apple.driver.X86PlatformPlugin 1.0.0

com.apple.driver.IOPlatformPluginFamily 5.9.1d7

com.apple.iokit.IOSlowAdaptiveClockingFamily 1.0.0

com.apple.iokit.IOAcceleratorFamily2 156.16

com.apple.AppleGraphicsDeviceControl 3.10.24

com.apple.driver.AppleSMBusController 1.0.13d1

com.apple.iokit.IOGraphicsFamily 2.4.1

com.apple.driver.AppleSMC 3.1.9

com.apple.kext.triggers 1.0

com.apple.iokit.IOUSBUserClient 705.4.0

com.apple.driver.AppleUSBMultitouch 245.2

com.apple.iokit.IOUSBHIDDriver 705.4.0

com.apple.driver.AppleUSBMergeNub 705.4.0

com.apple.driver.AppleUSBComposite 705.4.9

com.apple.driver.CoreStorage 471.30.1

com.apple.iokit.IOSCSIMultimediaCommandsDevice 3.7.5

com.apple.iokit.IOBDStorageFamily 1.7

com.apple.iokit.IODVDStorageFamily 1.7.1

com.apple.iokit.IOCDStorageFamily 1.7.1

com.apple.iokit.IOAHCISerialATAPI 2.6.1

com.apple.iokit.IOSCSIArchitectureModelFamily 3.7.5

com.apple.driver.AppleThunderboltDPInAdapter 4.0.6

com.apple.driver.AppleThunderboltDPAdapterFamily 4.0.6

com.apple.driver.AppleThunderboltPCIDownAdapter 2.0.2

com.apple.driver.AppleThunderboltNHI 3.1.7

com.apple.iokit.IOThunderboltFamily 4.2.2

com.apple.iokit.IOFireWireFamily 4.5.7

com.apple.iokit.IOAHCIFamily 2.7.5

com.apple.iokit.IOUSBFamily 720.4.4

com.apple.driver.AppleEFINVRAM 2.0

com.apple.driver.AppleEFIRuntime 2.0

com.apple.iokit.IOHIDFamily 2.0.0

com.apple.iokit.IOSMBusFamily 1.1

com.apple.security.sandbox 300.0

com.apple.kext.AppleMatch 1.0.0d1

com.apple.driver.AppleKeyStore 2

com.apple.driver.AppleMobileFileIntegrity 1.0.5

com.apple.driver.AppleCredentialManager 1.0

com.apple.driver.DiskImages 397

com.apple.iokit.IOStorageFamily 2.0

com.apple.iokit.IOReportFamily 31

com.apple.driver.AppleFDEKeyStore 28.30

com.apple.driver.AppleACPIPlatform 3.1

com.apple.iokit.IOPCIFamily 2.9

com.apple.iokit.IOACPIFamily 1.4

com.apple.kec.Libm 1

com.apple.kec.corecrypto 1.0

com.apple.kec.pthread 1

System Profile:

AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0xF5), Broadcom BCM43xx 1.0 (7.15.166.24.3)

Bluetooth: Version 4.3.5f8 15969, 3 services, 27 devices, 1 incoming serial ports

Thunderbolt Bus: MacBook Pro, Apple Inc., 25.1

Memory Module: BANK 0/DIMM0, 2 GB, DDR3, 1600 MHz, 0x02FE, 0x45424A3230554638424455302D474E2D4620

Memory Module: BANK 1/DIMM0, 2 GB, DDR3, 1600 MHz, 0x02FE, 0x45424A3230554638424455302D474E2D4620

USB Device: Hub

USB Device: FaceTime HD Camera (Built-in)

USB Device: Hub

USB Device: Hub

USB Device: BRCM20702 Hub

USB Device: Bluetooth USB Host Controller

USB Device: IR Receiver

USB Device: Apple Internal Keyboard / Trackpad

Serial ATA Device: APPLE HDD HTS545050A7E362, 500.11 GB

Serial ATA Device: MATSHITADVD-R   UJ-8A8

Model: MacBookPro9,1, BootROM MBP91.00D3.B0B, 4 processors, Intel Core i7, 2.3 GHz, 4 GB, SMC 2.1f175

Network Service: Wi-Fi, AirPort, en1

Graphics: Intel HD Graphics 4000, Intel HD Graphics 4000, Built-In

Graphics: NVIDIA GeForce GT 650M, NVIDIA GeForce GT 650M, PCIe, 512 MB